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J. S. ANDREWS.

HYDROGARBON FURNACE. No. 393,415. Patented No 27. 1888.

N PETERS. Phclb-Wcgnphur. Wuhingmn. DIG

UNITED STATES JOHN S. ANDBEYVS,

PATENT Garden,

OF NEW YORK, N. Y.

HYDROCARBON-FURNACE.

SPECIFICATION forming part of Letters Patent No. 393,415, dated November 27, 1888.

Application filed May 23, 1887. Serial No. 239,113.

To all whom iv may concern.-

Be it known that I, JOHN S. ANDREWS, a citizen of the United States, residing at New York, in the county of New York, and State of New York, have invented certain new and useful Improvements in Hydrocarbon Fur naoes; and I do hereby declare the following to be a full, clear,and exact description of the invention, such as will enable other skilled in the art to which it appertains to make and use the same.

My invention relates to apparatus for heating and volatilizing hydrocarbon oils and other liquids employed in the manufacture of heating and illuminating gas in suitable apparatus designed for that purpose and particularly in an appa-ratus'of the character disclosed in Letters Patent No. 345,649, dated July 13, 1886; and it consists in the construction, arrangement, and combination of parts hereinafter described, and pointed out in the claims.

The object of my invention is to provide means for blowing and cleaning out the pipes which convey the heated and partly or entirely volatilized fluids from the preparatory heating apparatus to the burner within the furnace by admitting the steam or hot water used in heating the oil and for m xing with the oil into the pipe entering the furnace ata point farther from the furnace than the point of entrance of the oil and water or steam pipes for the purpose of blowing out all solid carbon or otherimpurities which may be formed and collected Within the pipes inside of the furnaceand the oil and water or steam pipes at their points of entrance into the pipe which enters the furnace. I accomplish this object by the apparatus illustrated in the accompanying drawings wherein the same numerals indicate the same parts, and in which the figure represents a longitudinal vertical section of a shell or furnace casing and a side elevation of the reversely-inclined pipes and burner within the same, the oil-heating chamber provided with a coil and suitable connecting-pipes for conveying oil and hot water or steam thereto and delivering the same into the inclined pipes within the furnace.

In the above named patent a series of inclined oil and water pipes of increasing diameters are shown and their purposes and operation described, said pipes being adapted to (No model.)

contain and feed the oil and water desired to be decomposed into their component gases and convey the mingled gases therefrom into a burner which is common to them all, where they are ignited and form a heating source for the pipes through which the liquids pass, and a so such source for the production of heat for other purposes and for the generation ofsteam.

In the drawing, 1, l, and 1indicate the inclined pipes arranged in reverse directions and united at their ends by elbows 2. Ihe pipes l, l, and l are of increasing diameter and especially adapted for the conversion of hydrocarbon oils and water and other liquids into gas and for feeding the same to the burner B, where ignition and combustion thereof take place, as fully described in said patent.

Instead of heating the oil and other liquids entirely in the pipes within the chamber of the furnace, as in the apparatus shown in said patent, better results follow from heating the same before they are admitted into the pipes within said furnace-chamber. To these ends I provide and support outside of the furnacecasing a heating-chamber, 3, which communi cates with vertically and horizontally extending steam or hot water pipes 3 3, which lead through the respective valve-controlled branch pipes 4 4 to a steam-boiler, 5, or to a hot-water tank, 5, according to the desire to use either steam or hot water in the chamber 3 for heating the oil, and also a water-tank and cnnnecting-pipe,5, with the dome of the boiler. Within said heatingchamber is arranged the coiled oil-supply pipe 6, which extends down from the bottom thereofby pipe 6, enters the furnace-casing, and connects with the end of double pipe 1. The upper end of the coiled oil-pipe 6 connects with a valveregnlated vertically and horizontally extending pipe, 6 6", which leads to the oil-receptacle 7. To the bottom of the heating-chamber 3 is also connected a valve-regulated pipe, 8, which is coupled to the oil-pipe 6' outside of the furnace-casing, the purpose of said pipe 8 being to permit hot water or steam from the heating-chamber to be forced along through the pipes and burner within the furnace for loosening and removing any sediment or other foreign matter which may have formed or settled therein, thereby keeping said pipes and burner free and clear. .I also provide a pipe, 3, for delivering the water from chamber 3 into pipe 1. A petcock, 9, of the usual from and for the usual purpose, is also arranged at the bottom of the heating-chamber. I also provide for heating the water in tank 5 by allowing steam to pass into the bottom of the same from the dome of the steanrboiler by pipe 5.

For starting and continuing the operation of the apparatus, the cocks or valves in the pipes are adjusted for admitting the oil into the coiled pipe within the heating-chamber and for shutting off its passage into the pipes within the furnace. Then steam or hot water is admitted into the heatingchambcr3, and thereby the oil in the coiled pipe becomes sufficiently heated. Then, when the pipes in the furnace have also become properly heated, the valve in the oil-pipe extending from the bottom of the heatiugchamber is opened and the oil permitted to enter the pipes within the furnace chamber in a heated state. In this condition the oil is gradually converted into gas, and all tendency to too sudden expansion of the vapor and back-pressure is avoided.

The distinguishing features of my present invention, in view of the apparatus disclosed in the patent above named, reside in the means shown and described for preventing the oilpipes from clogging and keeping them free and clear. To clean said pipes, the oil is shut off, all necessary cocks closed, and steam is permitted to flow through pipe 1 1 1" from the dome of the boiler through pipes 5 and 3 or hot water from the tank 5" through pipes 4 and 3.

M y present im proremcn ts are also appli cable to the heating of water before entering the furnace to be converted into gas, and I do not wish to be considered as restricting them to use in connection with an oilsupply; also, it is obvious that minor changes in the details of construction and arrangement of the parts of my apparatus can be made without, departing from the principle of my invention.

I am aware that it is not broadly new to heat the oil before admitting it within the volatilizing-pipes in the furnace, and I am also aware that it is not new to utilize steam or hot water mixed with oil for the purpose of producing water gas for heating the oil, and I therefore do not claim any construction or combination of parts for accomplishing these objects; but I am not aware that, in apparatus for manufacturing such gas, provision has been made by which the pipe conveying the mixed oil and water or steam to the volatiliziugpipes and to the burner could be blown out by steam or hot water entering the said pipe at a point farther from the furnace than the entrances of the oil and water or steampipes; and

I therefore claim as new and of my invention- 1. In an apparatus for vaporizing and burning hydrocarbons, the combination, with a furnacechambcr, of a vaporizing coil and burner located in said furnace chamber, an oil-heating chamber located at the side of said furnacechamher, an oil-pipe passing through said chamber and entering said vaporizing-coil, a water or steam pipe enteringthe heating chainbcr, a water or steam pipe'connecting the said chamber with the vaporizing coil, and a blowoli' pipe extending from the chamber and entering the end of the oil-pipe outside of its branch in the chamber, substantially as and for the purpose set forth.

2. An apparatus for manufacturing and burning gas, comprising a furnace chamber provided with oil and seem vaporizing pipes and with a burner, an oiltank connected to the oil-pipe of the furnace and formed with a coil, an oil-heating chamber surrounding said. coil and provided with a pipe at its bottom entering the steam'pipe ofthe furnace, a boiler, a hot-water tank, a pipe connecting the boiler and hot-water tank and having a branch connected to the oilheating chamber and provided with cocks at both sides of thejoint for the branch pipe, and a pipe extending from the hot-Water tank to the said branch pipe and provided with a stop-cock, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN S. ANDREWS.

Witnesses:

M. MoMANUs, R0 in. J. (i nirrrri r. 

